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Murphy was through on goal but was tripped by Elneny with only the keeper to beat.

"I'm not a guy who calls for red cards but this situation because we were one one with the goalkeeper," said Farke. "That's almost 100% 2-0 and then we're in the next round.

Eddie Nketiah equalises for Arsenal against Norwich

"Elneny should have seen a red card and then it's 11 men against 10 and they are not able to build so much pressure and there are not all those set pieces and no 1-1. To accept this decision is really hard.

"I'm very proud of my lads for this performance, especially coming 48 hours after a high intensity derby win, but we're very disappointed because we feel we deserve to be in the next round.